I recently did a complete overhaul of my brakes and used the Goodridge speed bleeders for the first time. As is typical with a brake overhaul, rebuilding calipers, rebuilding the master cylinder and installing the components was the easy part. Filling and bleeding the system is when things tend to get a little difficult. Don't expect miracles just because you are using speed bleeders. Starting with 100% air in the system, it took me four hours of work to fill and bleed the system and achieve a perfect, firm, brake lever. Even with the speed bleeders, bleeding the brake system is still a messy, time consuming job. Two hours into the process, I still had zero resistance at the lever and no piston movement. That's when I swapped out the speed bleeders for the original OEM bleeders. I theorized that with so much air in the system, I wasn't able to generate enough pressure at the bleeder to fully open the check valve (if you put a speed bleeder between your lips, you can't generate enough pressure to blow through them). I theorized that by using the OEM bleeder, I would be able to get the air and fluid to flow through them much more easily. After achieving some spongy resistance at the lever, I reinstalled the speed bleeders and continued bleeding until I achieved the perfection I was looking for.

If you're starting with 100% air in your brake system, I recommend against using the speed bleeders. Once you have achieved some pressure in your brake system, they work as advertised. Very nice.

Replacing the brake fluid every year or two is recommended maintenance that is frequently neglected because it is a messy, time consuming job. Having speed bleeders installed makes that job easier, and makes it more likely that you would want to tackle that frequently neglected maintenance.

If you get the "long" speed bleeder, the shoulder of the bleeder where the bleed hose attaches is longer. It makes it easier to keep the hose attached while bleeding.